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a mafs of Sulphur , before its parts 

 were put into a new and brisk mo- 

 tion, was fenfibly cold , and as foon 

 as its parts were put into a greater 

 agitation than thofe of a mans fin- 

 gers , it grew fenfibly hot s which 

 argues, that 'twas not by its bare 

 prefence 5 or any emanative a&ion, 

 ( as the Schools fpeak ) that the 

 Sulphur communicated any Heat to 

 my hand 3 and alfothat, when 'twas 

 briskly moved it did imprefs that 

 Quality, was no more than another 

 folid body, though incombuftible as 

 common Glafs, would have done, if 

 its parrs had been likewife put into 

 an agitation furpafling that of my 

 organs of feeling 5 fo that in our 

 Experiment, Sulphur it felf was be- 

 holden, for its a dual Heat, to Lo- 

 cal Motion , produced by external 

 agents in its parts. 



EX- 



